I would say it exploded the spread of disinformation. During that time I had a friend go from antivax to 5G conspiracy theories. It was wild to see her go down that rabbit hole. It also brought about the politicization of public health which has had disastrous effects (see the current Measles outbreak). It amplified individualism in this country even more. My freedom is far greater than caring about my elderly or immunocompromised neighbors or my own childs well being. And being asked to wear a mask in public is the height of government oppression!